I figured out what I did not understand.
4.1 uses an actual Java event, clicking on a button fires the chain of
events.
4.2 is a simulation, as if, there is no even fired, only a method
called manually.
What confused me was
public class MyEvent extends EventObject {
/** Creates a new instance of MyEvent */
public MyEvent(Object source) {
super(source);
}
which made it sounds as if there was a way of creating real event
objects...
But I checked and
public class MyOwnEvent{
public MyOwnEvent(Object source) {
}
works just the same. So example 4.2 has nothing to do with events API,
it is just a program using classes to show a simulation of what goes
on with events.
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